Of 46 counties in the Palmetto State, Union County ranks 32nd in terms of size (516 square miles). Union County is in Upstate South Carolina. South Carolina's Union County has about 1,000 acres of equestrian property for sale based on recent Land Network data. The combined market value of farmsand rural real estate for sale here was nearly $800,000. Browse all Union County horse farms for sale on the Land Network to find the equestrian property that's right for your future needs, whether you're a horse breeder, equestrian business or simply horse lover looking for stable facilities, grooming pens or grazing pasture for your own horses. The most common type of land for sale by combined acreage in Union County is residential property.